To change to 1080p, you have to go to the System Settings > Sound and Screen > Video resolution, and make sure 1080p is selected, and not automatic.

PS4 SYSTEMAUDIOSETUPGUIDE
To get the best audio from your PS4 System, it needs to be configured correctly to match your audio equipment. In most cases, using HDMI for your primary audio output port ensures that configuration is automatic, and because of that, this is the preferred output port to use on the PS4 System. Unfortunately, there are some setups for which the automatic configuration does not work as expected. Also, if using the optical output, configuration isn’t automatic and must be configured manually. It’s important to note that these audio configuration issues happen with any equipment, including other game systems, media players, and computers. However, for this guide, the focus is specifically on addressing common audio setup issues to ensure that you’re hearing everything exactly as intended on the PS4 System.

INCORRECTCHANNELCONFIGURATION
Channel configuration is generally automatic for HDMI, but is always manual for optical output. Unfortunately, some HDMI equipment deliberately misrepresents its native channel configuration, and then intentionally downmixes or discards the extra channels. While this isn’t always an issue when watching movies, it’s a very big problem for games. Movies typically only use the surround channels for ambience or an occasional front-to-back effect. Games are different: they render positional audio to all channels, all the time. If the channel configuration is incorrect, game sounds can attenuate or drop out completely. Some example setups that might cause this:
• TV sets with 2 speakers that misrepresent as 5.1 or 7.1 channel devices over HDMI
• Receivers that are configured for 2.0 of 5.1 but misrepresent as 7.1 channel devices over HDMI
• HDMI switchers and splitters that hide or misrepresent the actual channel configuration
• PS4 System optical output not configured to match target equipment
Symptoms of incorrect channel configuration are:
• Missing or heavily attenuated dialog
• Sounds not panning around the player with even volume levels
• Sounds heavily attenuated or missing when directly behind the player
• All sounds playing from the front in a surround 5.1/7.1 setup
• No audio
It’s critical to make sure that the PS4 System knows exactly which primary output port to use, and how many channels it needs to output on that port to match your equipment setup. Although some equipment can automatically downmix multichannel audio, this is never going to sound as good as having the correct channel setup identified in the PS4 System’s settings. Positional audio for games is rendered completely differently depending on the channel configuration, so for this reason any downmix done by the output device will always be inferior. First, determine how many channels you should be outputting:
• If you are using a television set’s internal speakers, you should always be outputting 2.0
• If you are using an AV receiver or other form of surround sound speaker setup, you should be outputting 2.0, 5.1, or 7.1 depending on whether you have 2, 6, or 8 speakers, respectively
If you need to force the PS4 System to output 2.0 channel audio on the primary output port, either because of HDMI channel misrepresentation issues, or because you simply know you are listening on 2 speakers and want to ensure the PS4 System stays in 2.0 channel mode, then do the following:
• Boot up the PS4 System and access the Settings menu
• Select ‘Sound and Screen’, ‘Audio Output Settings’, ‘Primary Output Port’
• Select ‘DIGITALOUT (OPTICAL)’. Note that you should select this regardless of whether or not you are intending to use HDMI; in this case the PS4 System willoutput audio to both optical and HDMI ports simultaneously
• Make sure that the first three checkboxes are NOT checked (Dolby Digital 5.1ch, DTS 5.1ch, AAC). This will force the PS4 System to only output 2.0 channel audio regardless of the HDMI configuration
• Select ‘OK’ to apply
• Select ‘Audio Format (Priority)’
• Check ‘Linear PCM’
If you have a 5.1 speaker setup but your PS4 System is detecting and outputting 7.1 over HDMI, you need to let the PS4 System know that you prefer 5.1 output mode. Otherwise, sounds may disappear when sent directly to the back channels which are missing from the 5.1 configuration. Do the following:
• Boot up the PS4 System and access the Settings menu
• Select ‘Sound and Screen’, ‘Audio Output Settings’, ‘Primary Output Port’, ‘HDMI’
• Make sure the checkbox ‘Output 5.1ch Audio’ is selected
• Select ‘OK’ to apply the changes
If you’re only hearing 2.0 output from 5.1/7.1 setup, this could mean that you are either using the wrong output port, or that you have not enabled the correct output formats in the PS4 System audio setup.

If you are using HDMI, you should normally get 5.1 or 7.1 LPCM output automatically if the attached device supports it. Make sure that you have enabled HDMI as the primary output port. Do the following:
• Boot up the PS4 System and access the Settings menu
• Select ‘Sound and Screen’, ‘Audio Output Settings’, ‘Primary Output Port’
• Select ‘HDMIOUT’
• Make sure that the ‘Output 5.1ch Audio’ is checked if you need 5.1 output, or unchecked if you need 7.1 channel output
• Select ‘OK’ to apply the changes
• Select ‘Audio Format (Priority)’
• Check ‘Linear PCM’
Note that some devices such as HDMI switchers or splitters may still misrepresent the output configuration as 2.0, making it impossible to pass 5.1/7.1 LPCM audio even if HDMI output is correctly selected. Some early HDMI 1.0 equipment may not support 5.1/7.1 LPCM audio at all. In these cases, you must remove and/or replace the equipment, or enable bitstream audio output and switch to using the optical output instead of HDMI output.

If you are using optical output and expecting 5.1 audio, but instead hear 2.0 audio or no audio at all, make sure that you’ve enabled a 5.1ch bitstream output mode (Dolby Digital 5.1ch or DTS 5.1ch) that you know if compatible with you equipment. Note that you should only enable bitstream output if you are certain that you device supports it, otherwise you could damage your speakers if you attempt to play bitstream audio over an unsupported device. Some devices will also mute all audio completely if they detect an incompatible bitstream format. To enable bitstream audio over optical audio outputs:
• Boot up the PS4 System and access the Settings menu
• Select ‘Sound and Screen’, ‘Audio Output Settings’, ‘Primary Output Port’
• Select ‘DIGITALOUT (OPTICAL)’
• Make sure that one of the first two checkboxes is checked (Dolby Digital 5.1ch, DTS 5.1ch), depending on what bitstream format your equipment supports
• Select ‘OK’ to apply the changes
• Select ‘Audio Format (Priority)’
• Check ‘Bitstream (Dolby)’ or ‘Bitstream (DTS)’, matching what you selected in the primary output port settingsDIALOG IS SOFT OR INAUDIBLE IN CUTSCENESAND/OR DURINGGAMEPLAY
There are a couple of possibilities for this, depending on your equipment. If you have an AV receiver set up for surround sound (5.1 or 7.1), but you don’t actually have a center speaker, it’s important to set up your receiver’s speaker configuration so that it knows to send center channel audio to the left and right speakers instead. Otherwise, center channel audio will be simply discarded. Many movies will only play dialog in the center channel, and some games never play dialog in the center; some of either can also play dialog across all speakers, so this problem may not be immediately apparent. In other words, just because one game or movie has audible dialog and another does not, doesn’t mean that you don’t have a problem with your AV receiver setup. This can only be fixed by setting up your receiver’s speaker configuration correctly. Every system is different, so you’ll need to consult the manual for your receiver to find out how to configure it.

Another case where dialog can be soft or inaudible is when using a TV or other device with ‘dialog enhancement’, ‘spatial enhancement’, or any other number of unique proprietary sound processing techniques. Many of these processing techniques were designed specifically to work with movies, which mainly play dialog out of center only; this is not all true for games where dialog is positional and rendered all around the player. For games it is best to disable any of these sound enhancement techniques; this will usually solve positional audio volume issues. For TV speaker use, it’s almost always best to force the PS4 System into 2.0 channel mode, which will then render the center channel audio to the front speakers automatically.